Machine for making perforated music-sheets.



P. J. MEAHL. 1 MACHINE FOR MAKING-PERFORATED MUSIC SHEETS.

' APPLICATION FILED JULY30, 1910.

984,834. Patented Feb. 21,1911.

:TED STATlEh PATENT UlFFlE MACHINE FOR MAKING IEBFORATEID MUSIC-SHEETS.

Specification of Letters Patent.

Patented Feb. 21. .1591 1.

Application filed July 30, 1910. Serial No. 574,652.

To all whom it may concern:

Be itknown that I, PHILIP J MEAI-IL, a citizen hf the United States, and a resident of Bayonne, the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Machines for Making Perforated Music-Sheets, of which the following is a specification.

This invention relates to improvements in machines for making perforated music sheets, such as are used in automatic music playing devices.

The object of my invention is to provide a new and improved attachment for machines of this kind for the purpose of holding the pattern or master sheet snugly and master sheet.

step hy step, for the purpose of controlling the operation of the proper punches and in such a manner that there is no liability whatever of tearing the edges of the rack slots or opening out along the edges of the of equi-distant rack slots into which sprocket teeth engage for the dpurpose of feeding the master sheet forwar The master sheet is moved over the fixed cylinder 4.,nprotided with a row of holes 5 into which the selector pins 30 can pass whenever a slot in the master sheet registers with the cdrresponding hole 5, said selector pins 30 being guided in the fixed rail 6 parallel with and a short distance from the drum or cylinder 4. It has been customary in machines of this kind to give the master sheet the necessary tension by and while drawing it off from its roll by means of the sprocket teeth of the feed wheel that engage the rack slots in the sheet, but by so doing the teeth of the sprocket wheel are apt to tear and distort these rack slots whereby the master sheet is on the cylinder over which it is fed 011 a rotating shaft 8 which 1s drlven from suitable well known mechanism, not shown and each feed wheel is provided on its sur fans with a series of equally spaced cogs or teeth 9 each engaging in the equally spaced rack slots 3 along the edge of the master sheet I. The wheels 7 are of the same external diameter as the drum or cylinder 4- and are concentric therewith. In order to cause the sheet to hug the cylinder firmly, I pro vide two sheet metal are plates 10 and 11, one at the top and one at the bottom of the cylinder or drum and which are held in place close to the drum, leaving sufficient space for the paper to pass between the periphery of the drum and the inner, surfaces of the arc plates without undue friction and without binding, but still in such a manner as to hold the sheet snugly on the drum. Each arc plate 10 and 11 is stiffened along its side edges by wires or rods 12 over which the longitudinal edge parts of the metal are turned so as to form heads and along the ends these are plates 10 and 11 are stiffened and strengthened by segmental bands 13. As shown in Fig. 2 the arc plates 10 and 11 only extend the length of the cyl- .inder or drum l but do not extend over the toothed periphery of the driving wheels 7. From each end stiffening band 13 a bracket- 14 projects outward and is bent upward so that the teeth 9 of the wheel 7 can clear it, that is, when the wheel 7 rotates the teeth 9 pass under the bracket. Each bracket is provided 'on its underside with a sleeve 15 extending radially toward the center of the shaft 8.

From a collar l6 mounted loosely on the shaft 8 adjacent to the wheel. '7 two pins extend radially through the sleeves l5 and brackets 14 and have their outer end parts threaded so as to permit screwing winged or butterfly nuts on the same and between said nuts 18 and the upper or outer surfaces of thelnackets ll, the pins are surrounded by helical springs 19, which press the plates l0 and 11 toward the periphery of the cylinder. By means of the nuts 18, the tension of the springs 19 can be so adjusted as to hold the plates 10 and 11 in the proper position, that is, so close to the periphery of the cylinder as to permit the llJilPCl to pass without bind ing but at the same time resting snugly against the drum. As the paper is drawn in the direction indicated by the arrows'the paper will have a tendency to turn the plate in the direction of the upper edgeof the rail 6, which of course, stops further progthe master sheet is no longer relied upon to hold it taut and snug on the drum and engagement of the teeth 9 with the slots 3 is provided only for the purpose of feeding the master sheet forward and not for holding it taut, the strains on the edges of the slots 3 is reduced to a minimum, which is no longer injurious to the edges of said slots. As the arc plates cover about two thirds of the pe riphery of the drum, more teeth of the feed wheels are brought into engagement with the rack slots than when the sheet is pulled by the feed wheels from a tension spool.

Having described my invention what I claim asnew and desire to secure by Letters Patent is 1. In a machine for making perforated music sheets, the combination with a master sheet drum, of feed wheels for "moving the master sheet over the drum, and are plates for holding the master sheet snugly on the drum, substantially as set forth.

2. In a machine for making perforated music sheets, the combination with 'a fixed master sheet drum, of feed wheels at the ends of the drum and are plates extending along the periphery of the drum for holding '12th of July 'stantially as set forth.

3. In a machine for makingv perforated the ends of the drum, arc plates adjacent to the periphery of the drum, brackets projecting from said plates and means on said brackets for holding the plates adjacent-to the drum, substantially as set forth.

4. In a machine for making perforated music sheets, the combination with a master sheet drum, of mastersheet feed wheels at the ends of the drum, arc plates adjacent to the periphery of the drum, brackets project ing' from said plates and means for adjusting lthese holding means, substantially as set fort 1.

5. In a machine for making perforated music sheets, the combination with a master sheet drum, and master sheet feed wheels, of arc lates held adjacent to the periphery of the drum, brackets on the ends of the plates, pins passing through said brackets, springs surrounding the pins and resting on the brackets and butterfiy' nuts for adjusting the tension otthe springs, substantially as set forth.

Signed at New New York, and State of New York, this PHILIP JACOB MEAHL. Witnesses:

OSCAR F. GUNZ,

R. G; BREEN.

ork, in the county of music sheets, the combination-with a master sheet drum, of master sheet :t'eed wheels at 40 

